KR102191173B1 - The battery module equipped with a flexible member - Google Patents

The battery module equipped with a flexible member Download PDF

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KR102191173B1
KR102191173B1 KR1020190170802A KR20190170802A KR102191173B1 KR 102191173 B1 KR102191173 B1 KR 102191173B1 KR 1020190170802 A KR1020190170802 A KR 1020190170802A KR 20190170802 A KR20190170802 A KR 20190170802A KR 102191173 B1 KR102191173 B1 KR 102191173B1
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South Korea
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battery cell
elastic member
rubber
battery module
unit
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KR1020190170802A
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Korean (ko)
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KR20200008105A (en
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이원준
권대원
이지석
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에스케이이노베이션 주식회사
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H01M10/6555—Rods or plates arranged between the cells
    • H01M2/1077—
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/293—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

본 발명은 신축부재가 구비된 배터리모듈에 관한 것으로서, 하우징; 상기 하우징의 내부를 소정 개수의 분리되는 공간으로 구획하는 적어도 하나 이상의 분리벽; 케이스와, 상기 케이스 내부에 구비되는 배터리셀과, 상기 배터리셀에 연결되는 음극와 양극의 전극탭을 포함하여 구성되는 적어도 둘 이상의 단위 배터리셀; 및 상기 단위 배터리셀 사이에 삽입되는 신축부재를 포함하여 구성되며, 상기 단위 배터리셀 및 상기 신축부재는 상기 분리벽에 의해 구획되는 공간에 구비되는 것을 특징으로 한다.The present invention relates to a battery module provided with an elastic member, the housing; At least one separation wall partitioning the interior of the housing into a predetermined number of separated spaces; At least two unit battery cells including a case, a battery cell provided inside the case, and electrode tabs of a negative electrode and a positive electrode connected to the battery cell; And an elastic member inserted between the unit battery cells, wherein the unit battery cell and the elastic member are provided in a space partitioned by the separation wall.

Description

신축부재가 구비된 배터리모듈{The battery module equipped with a flexible member}The battery module equipped with a flexible member

본 발명은 신축부재가 구비된 배터리모듈에 관한 것으로서, 더욱 상세하게는 좀 더 효율적으로 단위 배터리셀 내부의 가열, 냉각 또는 단위 배터리셀 내부의 온도를 조정 할 수 있도록 신축부재가 구비된 배터리모듈에 관한 것이다.The present invention relates to a battery module provided with an elastic member, and more particularly, to a battery module provided with an elastic member so as to more efficiently heat, cool, or adjust the temperature inside the unit battery cell. About.

통상적으로 2차 전지는 재충전이 가능하고 대용량화가 가능한 것으로 대표적인 것으로 니켈카드뮴, 니켈수소 및 리튬이온전지 등이 있다. 이중에서 상기 리튬이온전지는 장 수명, 고용량 등 우수한 특성으로 인하여 차세대 동력원으로 주목받고 있다. 이 중에서, 리튬 2차 전지는 작동 전압이 3.6V 이상으로 휴대용 전자 기기의 전원으로 사용되거나, 또는 수개를 직렬 연결하여 고출력의 하이브리드 자동차에 사용되는데, 니켈-카드뮴 전지나, 니켈-메탈 하이드라이드 전지에 비하여 작동 전압이 3배가 높고, 단위 중량당 에너지 밀도의 특성도 우수하여 급속도로 사용이 증가되고 있는 추세이다.Typically, secondary batteries are rechargeable and capable of high capacity, and are representative of nickel cadmium, nickel hydrogen, and lithium ion batteries. Among them, the lithium ion battery is attracting attention as a next-generation power source due to its excellent characteristics such as long life and high capacity. Among them, lithium secondary batteries have an operating voltage of 3.6V or higher and are used as power sources for portable electronic devices, or are used in high-power hybrid vehicles by connecting several in series, and are used for nickel-cadmium batteries or nickel-metal hydride batteries. Compared to this, the operating voltage is three times higher and the energy density per unit weight is excellent, so the use is rapidly increasing.

상기 리튬 2차 전지는 다양한 형태로 제조가능한데, 대표적인 형상으로는 리튬 이온 전지에 주로 사용되는 원통형(cylinder type) 및 각형(prismatic type)을 들 수 있다. 최근 들어 각광받는 리튬 폴리머 전지는 유연성을 지닌 파우치형(pouched type)으로 제조되어서, 그 형상이 비교적 자유롭다. 또한 리튬 폴리머 전지는 안전성도 우수하고, 무게가 가벼워서 휴대용 전자 기기의 슬림화 및 경량화에 유리하다.The lithium secondary battery can be manufactured in various forms, and representative shapes include a cylinder type and a prismatic type mainly used for lithium ion batteries. Lithium polymer batteries, which are recently in the spotlight, are manufactured in a pouched type with flexibility, and thus their shape is relatively free. In addition, the lithium polymer battery has excellent safety and light weight, which is advantageous for slimming and lightening portable electronic devices.

한편, 많은 양의 전력을 필요로 하는 전기 자동차 등의 모터 구동용 전원의 경우에는 상기 2차 전지셀을 수십 개 직렬 또는 병렬로 연결하여 배터리모듈을 구성하게 된다.Meanwhile, in the case of a power supply for driving a motor such as an electric vehicle that requires a large amount of power, a battery module is formed by connecting dozens of the secondary battery cells in series or in parallel.

상기 복수개의 배터리모듈은 충전 또는 방전을 할 때 셀에서 열이 발생되며, 셀의 온도에 따라 배터리셀의 충전 또는 방전의 성능은 다르게 나타난다.When the plurality of battery modules are charged or discharged, heat is generated in the cell, and the charging or discharging performance of the battery cell is different depending on the temperature of the cell.

이에 따라, 배터리의 내부온도를 적정한 온도로 유지하는 것은 중요하다.Accordingly, it is important to maintain the internal temperature of the battery at an appropriate temperature.

종래 기술 한국공개특허 2007-0014631의 이차 전지 모듈은 단위전지에서 발생된 열을 효율적으로 냉각시킬 수 있도록, 적층 배열된 다수개의 단위전지, 및 상기 단위전지 사이에 설치되며, 내부에 냉각 유로가 형성되며 양면에 돌기가 형성된 복수개의 격벽을 포함하여 형성된다.The secondary battery module of the prior art Korean Patent Application Publication No. 2007-0014631 is installed between a plurality of stacked and arranged unit cells and the unit cells to efficiently cool the heat generated from the unit cells, and a cooling channel is formed therein. It is formed including a plurality of partition walls with protrusions formed on both sides.

이에 따라, 종래 기술은 복수개의 격벽 내부로 열전달매체가 순환하면서 다수개의 전지를 냉각하는 방식이다.Accordingly, in the prior art, a heat transfer medium circulates inside a plurality of partition walls to cool a plurality of batteries.

그러나 종래 기술은 격벽의 양면에 형성된 돌기와 다수 개의 단위전지가 맞닿은 영역만 냉각하는 구성으로서, 맞닿지 않은 영역은 냉각되지 않는 문제점이 있다.However, the prior art is a configuration in which only a region in which the protrusions formed on both sides of the partition wall and a plurality of unit cells contact each other is cooled, and there is a problem that the non-contact region is not cooled.

한국공개특허 2007-0014631(2007.02.01)Korean Patent Publication 2007-0014631 (2007.02.01)

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 배터리셀 사이에 신축부재를 구비하여, 배터리셀을 하우징의 분리벽 측으로 밀착함으로써, 배터리셀과 분리벽이 서로 밀착되어 열전달효율이 향상된 신축부재가 구비된 배터리모듈을 제공하려는 것이다.The present invention has been devised to solve the above problems, and by providing an elastic member between the battery cells, the battery cell is in close contact with the separation wall of the housing, so that the battery cell and the separation wall are in close contact with each other, thereby improving heat transfer efficiency. It is intended to provide a battery module provided with a member.

상기한 바와 같은 과제를 해결하기 위한 본 발명의 신축부재가 구비된 배터리모듈은, 파우치형 케이스, 상기 파우치형 케이스 내부에 구비되는 배터리셀, 및 상기 배터리셀에 연결되는 음극과 양극의 전극탭을 포함하여 구성되는 단위 파우치형 배터리셀;과 복수개의 상기 단위 파우치형 배터리셀을 수용하는 하우징;을 포함하는 배터리 모듈에 있어서, 상기 하우징은 내부를 소정 개수의 분리되는 공간으로 구획하는 분리벽을 포함하고, 상기 분리벽에 의해 형성된 하우징의 각 공간에는 적어도 하나의 단위 파우치형 배터리셀이 수용되되, 상기 각 공간에 수용된 단위 파우치형 배터리셀 사이에는 신축가능하게 형성된 신축부재가 배치되고, 상기 각 공간에 수용된 단위 파우치형 배터리셀의 일면과 분리벽, 또는 상기 각 공간에 수용된 단위 파우치형 배터리셀의 일면과 하우징의 외벽 사이에는 하우징의 외부로 열을 전달하기 위한 열전달부재가 배치되어 형성된다.The battery module provided with the elastic member of the present invention for solving the above-described problems includes a pouch-type case, a battery cell provided inside the pouch-type case, and electrode tabs of a negative electrode and a positive electrode connected to the battery cell. A battery module comprising: a unit pouch-type battery cell configured to include; and a housing for accommodating a plurality of unit pouch-type battery cells, wherein the housing includes a partition wall that divides the interior into a predetermined number of separate spaces. And, at least one unit pouch type battery cell is accommodated in each space of the housing formed by the separating wall, and an elastic member formed to be stretchable is disposed between the unit pouch type battery cells accommodated in each space, and each space A heat transfer member for transferring heat to the outside of the housing is disposed and formed between one surface of the unit pouch type battery cell accommodated in the unit and a separation wall, or between the surface of the unit pouch type battery cell accommodated in each space and the outer wall of the housing.

또한, 상기 신축부재는 평판으로 형성되고, 스티렌부타디엔고무(styrene butadien rubber:SBR), 폴리클로로프렌고무(polychloroprene rubber:CR), 니트릴고무(acrylonitrile-butadiene rubber:NBR), 부틸고무(isoprene-isobutylene rubber:IIR), 부타디엔고무(butadiene rubber:BR), 이소프렌고무(isoprene rubber:IR), 에틸렌프로필렌고무(ethylene propylene rubber:EPR), 다황화물계고 무(polysulfide rubber), 실리콘고무(silicone rubber), 플루오로고무(fluororubber), 우레탄고무(urethane rubber), 아크릴고무(acrylic rubber)중 선택되는 한가지 재질로 형성된다.In addition, the elastic member is formed in a flat plate, styrene butadiene rubber (SBR), polychloroprene rubber (CR), nitrile rubber (NBR), butyl rubber (isoprene-isobutylene rubber). :IIR), butadiene rubber (BR), isoprene rubber (IR), ethylene propylene rubber (EPR), polysulfide rubber, silicone rubber, fluorine It is formed of one material selected from fluororubber, urethane rubber, and acrylic rubber.

또한, 상기 신축부재는 알루미늄 또는 열전도성 금속재질로 형성되는 한 쌍의 판이 겹쳐 형성되되, 상기 한 쌍의 판은 적어도 하나 이상의 일정영역이 서로 대응되도록 돌출된 돌출부를 포함하고, 상기 돌출부가 서로 대향하도록 결합되어 형성된다.In addition, the elastic member is formed by overlapping a pair of plates formed of aluminum or a thermally conductive metal material, and the pair of plates includes protrusions protruding such that at least one predetermined region corresponds to each other, and the protrusions face each other. Is formed to be combined.

또한, 상기 신축부재는 알루미늄 또는 열전도성 금속재질로 형성되는 한 쌍의 판이 겹쳐 형성되되, 일정영역이 서로 대응되도록 함몰되며 표면이 요철형태로 형성된 함몰부를 포함하여 형성된다.In addition, the elastic member is formed by overlapping a pair of plates made of aluminum or a thermally conductive metal material, and is formed to include a recessed portion that is recessed so that a predetermined area corresponds to each other and has a surface formed in an uneven shape.

또한, 상기 열전달 부재는, 상기 단위 파우치형 배터리셀의 일부를 수용할 수 있도록 함몰 형성되고, 상기 단위 파우치형 배터리셀과 함께 상기 각 공간에 수용될 때 열전달 부재의 테두리가 상기 분리벽의 상부까지 연장되도록 형성된다.In addition, the heat transfer member is formed to be recessed to accommodate a part of the unit pouch type battery cell, and when accommodated in each space together with the unit pouch type battery cell, the edge of the heat transfer member reaches the upper part of the separation wall. It is formed to extend.

또한, 상기 신축부재를 형성하는 한 쌍의 판은 외측 테두리가 절곡되어 형성되는 것을 특징으로 한다.In addition, the pair of plates forming the elastic member is characterized in that it is formed by bending the outer edge.

이에 따라, 본 발명의 신축부재가 구비된 배터리모듈은 단위 배터리셀 사이에 신축부재를 구성함으로써, 신축부재에 의해 단위 배터리셀과 분리벽이 서로 밀착되어 밀착력이 증가함에 따라 열전달효율이 향상되는 장점이 있다.Accordingly, the battery module provided with the elastic member of the present invention constitutes an elastic member between the unit battery cells, so that the unit battery cell and the separation wall are in close contact with each other by the elastic member, so that the heat transfer efficiency is improved as the adhesion increases. There is this.

또한, 본 발명의 신축부재가 구비된 배터리모듈은 열의 전달에 의해 단위 배터리셀을 냉각하는 구성으로서, 하우징의 내부에 별도로 냉각 유로를 구성할 필요가 없는 장점이 있다.In addition, the battery module provided with the expandable member of the present invention is configured to cool the unit battery cells by transfer of heat, and has an advantage that it is not necessary to configure a separate cooling channel inside the housing.

또한, 본 발명의 신축부재가 구비된 배터리모듈은 열전달부재를 구성함으로써, 열의 전달에 의한 냉각 효과가 더욱 향상되는 장점이 있다.In addition, the battery module provided with the elastic member of the present invention has the advantage of further improving the cooling effect by heat transfer by configuring the heat transfer member.

도 1은 본 발명의 실시예에 따른 하우징의 사시도
도 2는 본 발명의 실시예에 따른 단위 배터리셀의 사시도 및 단면도
도 3은 본 발명의 실시예에 따른 신축부재가 구비된 배터리모듈의 사시도
도 4는 본 발명의 실시예에 따른 신축부재가 구비된 배터리모듈의 평면도
도 5는 도 3에 도시된 적층 구조의 분해사시도
도 6는 도 3에 도시된 적층 구조의 단면도
도 7은 도 3에 도시된 적층 구조가 하우징에 구비된 단면도
도 8 내지 도 11은 본 발명에 따른 신축부재의 여러 실시예1 is a perspective view of a housing according to an embodiment of the present invention
2 is a perspective view and a cross-sectional view of a unit battery cell according to an embodiment of the present invention
3 is a perspective view of a battery module equipped with an elastic member according to an embodiment of the present invention
4 is a plan view of a battery module provided with an elastic member according to an embodiment of the present invention
5 is an exploded perspective view of the stacked structure shown in FIG. 3
6 is a cross-sectional view of the laminated structure shown in FIG. 3
7 is a cross-sectional view in which the laminated structure shown in FIG. 3 is provided in a housing
8 to 11 are several embodiments of the elastic member according to the present invention

이하, 본 발명의 기술적 사상을 첨부된 도면을 사용하여 더욱 구체적으로 설명한다.Hereinafter, the technical idea of the present invention will be described in more detail using the accompanying drawings.

도 1은 본 발명의 실시예에 따른 하우징의 사시도, 도 2는 본 발명의 실시예에 따른 단위 배터리셀의 사시도 및 단면도, 도 3은 본 발명의 실시예에 따른 신축부재가 구비된 배터리모듈의 사시도, 도 4는 본 발명의 실시예에 따른 신축부재가 구비된 배터리모듈의 평면도이다.1 is a perspective view of a housing according to an embodiment of the present invention, FIG. 2 is a perspective view and cross-sectional view of a unit battery cell according to an embodiment of the present invention, and FIG. 3 is a view of a battery module provided with an elastic member according to an embodiment of the present invention. A perspective view, Figure 4 is a plan view of a battery module provided with an elastic member according to an embodiment of the present invention.

본 발명의 실시예에 따른 배터리 모듈(1000)은 크게 하우징(100), 단위 배터리셀(200), 신축부재(300)를 포함하여 형성된다.The battery module 1000 according to the embodiment of the present invention is largely formed to include a housing 100, a unit battery cell 200, and an elastic member 300.

도 1을 참조하면, 하우징(100)은 본 발명의 단위 배터리셀(200) 및 신축부재(300)가 구비되는 배터리모듈(1000)의 기본 몸체로서, 내부에 단위 배터리셀(200)이 구비된다. Referring to FIG. 1, a housing 100 is a basic body of a battery module 1000 including a unit battery cell 200 and an elastic member 300 of the present invention, and a unit battery cell 200 is provided therein. .

또한, 분리벽(110)은 알루미늄 또는 열전도성 금속 재질로 형성된다.In addition, the separation wall 110 is formed of aluminum or a thermally conductive metal material.

도면에서 하우징(100)은 분리벽(110)에 의해 소정 개수의 분리되는 공간으로 구획된 실시예를 도시하였으나, 본 발명은 이에 한정되지 않으며, 더욱 다양하게 형성될 수 있다.In the drawings, the housing 100 is illustrated in an embodiment divided into a predetermined number of separated spaces by the separation wall 110, but the present invention is not limited thereto, and may be formed in more various ways.

도 2를 참조하면, 단위 배터리셀(200)은 파우치형 케이스(210)와, 케이스(210) 내부에 구비되는 배터리셀(220), 상기 배터리셀(220)과 연결되어 외부로 각각 노출되는 양극의 전극탭(230)과 음극의 전극탭(240)을 포함하여 형성되는 파우치형 배터리셀이며, 하우징(100)의 각 공간에 적어도 하나가 구비되며, 바람직하게는 적어도 2개 이상 구비된다.Referring to FIG. 2, the unit battery cell 200 includes a pouch-shaped case 210, a battery cell 220 provided inside the case 210, and a positive electrode connected to the battery cell 220 and exposed to the outside. It is a pouch-type battery cell formed including the electrode tab 230 of the negative electrode and the electrode tab 240 of the negative electrode, and at least one is provided in each space of the housing 100, preferably at least two or more.

이 때, 분리벽(110)은 단위 배터리셀(200)과 맞닿은 면에서 발생한 열을 전달 받아서 상하방향으로 방출한다.At this time, the separation wall 110 receives heat generated from a surface in contact with the unit battery cell 200 and discharges it in the vertical direction.

그러나 단위 배터리셀(200)과 분리벽(110)이 맞닿는 접촉력은 한계가 있는데, 이를 해결하기 위해 본 발명의 신축부재가 구비된 배터리모듈(1000)은 단위 배터리셀(200) 사이에 신축부재(300)를 구성하였다.However, there is a limit to the contact force between the unit battery cell 200 and the separation wall 110, and to solve this, the battery module 1000 provided with the elastic member of the present invention has an elastic member between the unit battery cells 200 ( 300) was constructed.

도 3 및 도 4를 참조하면 신축부재(300)는 신축 및 축소가 가능한 재질로 형성되며, 단위 배터리셀(200) 사이에 삽입된다.3 and 4, the elastic member 300 is formed of a material capable of expanding and contracting, and is inserted between the unit battery cells 200.

또한, 신축부재(300)는 판형태로 형성될 수 있다.In addition, the elastic member 300 may be formed in a plate shape.

이 때, 신축부재(300)의 재질은 스티렌부타디엔고무(styrene butadien rubber:SBR), 폴리클로로프렌고무(polychloroprene rubber:CR), 니트릴고무(acrylonitrile-butadiene rubber:NBR), 부틸고무(isoprene-isobutylene rubber:IIR), 부타디엔고무(butadiene rubber:BR), 이소프렌고무(isoprene rubber:IR), 에틸렌프로필렌고무(ethylene propylene rubber:EPR), 다황화물계고 무(polysulfide rubber), 실리콘고무(silicone rubber), 플루오로고무(fluororubber), 우레탄고무(urethane rubber), 아크릴고무(acrylic rubber)중 선택되는 한가지 재질로 형성된다.At this time, the material of the elastic member 300 is styrene butadien rubber (SBR), polychloroprene rubber (CR), acrylonitrile-butadiene rubber (NBR), butyl rubber (isoprene-isobutylene rubber). :IIR), butadiene rubber (BR), isoprene rubber (IR), ethylene propylene rubber (EPR), polysulfide rubber, silicone rubber, fluorine It is made of one material selected from fluororubber, urethane rubber, and acrylic rubber.

또한, 신축부재(300)는 단위 배터리셀(200)을 분리벽(110) 측으로 밀착한다.In addition, the elastic member 300 is in close contact with the unit battery cell 200 toward the separation wall 110.

즉, 신축부재(300)는 단위 배터리셀(200)을 분리벽(110) 측으로 밀착함으로써, 단위 배터리셀(200)에서 발생하는 열의 좀 더 많은 양을 분리벽(110)으로 전달할 수 있도록 돕는다.That is, the elastic member 300 helps to transfer a more amount of heat generated from the unit battery cell 200 to the separation wall 110 by intimate contact with the unit battery cell 200 toward the separation wall 110.

이에 따라, 본 발명의 신축부재가 구비된 배터리모듈(1000)은 단위 배터리셀(200) 사이에 신축부재(300)를 구성함으로써, 신축부재(300)에 의해 단위 배터리셀(200)과 분리벽(110)이 서로 밀착되어 밀착력이 증가함에 따라 열전달효율이 향상되는 장점이 있다.Accordingly, the battery module 1000 provided with the elastic member according to the present invention comprises the expansion member 300 between the unit battery cells 200, and thus the unit battery cell 200 and the separation wall are formed by the expansion member 300. As (110) is in close contact with each other to increase the adhesion, there is an advantage in that the heat transfer efficiency is improved.

또한, 본 발명의 신축부재가 구비된 배터리모듈(1000)은 열의 전달에 의해 단위 배터리셀(200)을 냉각하는 구성으로서, 하우징(100)의 내부에 별도로 냉각 유로를 구성할 필요가 없는 장점이 있다.In addition, the battery module 1000 provided with the expandable member of the present invention is configured to cool the unit battery cell 200 by transfer of heat, and has the advantage of not having to configure a separate cooling channel inside the housing 100. have.

또한, 본 발명의 실시예에 따른 신축부재가 구비된 배터리 모듈(1000)은 상기 단위 배터리셀(200), 분리벽(110) 및 신축부재(300)의 사이에는 상기 하우징의 내면의 방향으로 적어도 하나 이상의 열전달부재가 더 배치되는 것을 특징으로 한다.In addition, the battery module 1000 provided with the elastic member according to the embodiment of the present invention is at least in the direction of the inner surface of the housing between the unit battery cell 200, the separation wall 110 and the elastic member 300. At least one heat transfer member is further disposed.

이 때, 열전달부재(400)는 단위 배터리셀(200), 분리벽(110) 또는 신축부재(300)와 맞닿은 면에서 발생하는 열을 전달받아서 상하방향으로 방출한다.At this time, the heat transfer member 400 receives heat generated from a surface in contact with the unit battery cell 200, the separation wall 110, or the elastic member 300 and discharges it in the vertical direction.

또한, 열전달부재(400)는 분리벽(110)과 같은 재질인 알루미늄 또는 열전도성 금속 재질로 형성된다.In addition, the heat transfer member 400 is formed of aluminum or a thermally conductive metal material, which is the same material as the separation wall 110.

또한, 열전달부재(400)의 내부에 상기 단위 배터리셀(200)의 일부를 수용할 수 있도록 함몰 형성되고, 테두리가 분리벽(110)의 내측으로 굽혀지는 만곡된 형태로 형성되며, 단위 배터리셀(200)과 함께 분리벽(110)에 의한 각 공간에 수용될 때 테두리가 상기 분리벽(110)의 상부까지 연장되도록 형성된다 In addition, the heat transfer member 400 is formed in a concave shape to accommodate a part of the unit battery cell 200, the rim is formed in a curved shape that is bent inside the separation wall 110, and the unit battery cell When accommodated in each space by the separation wall 110 together with 200, the border is formed to extend to the upper portion of the separation wall 110

이에 따라, 본 발명의 신축부재가 구비된 배터리모듈(1000)은 열전달부재(400)를 구성함으로써, 열의 전달에 의한 냉각 효과가 더욱 향상되는 장점이 있다.Accordingly, the battery module 1000 provided with the elastic member according to the present invention has the advantage of further improving the cooling effect due to heat transfer by configuring the heat transfer member 400.

또한, 본 발명의 신축부재가 구비된 배터리모듈(100)은 단위 배터리셀(200), 신축부재(300), 및 열전달부재(400)가 적층된 구조를 이루며 하우징(100)의 분리벽(110)에 의해 구획되는 공간에 구비되는 데, 도 3은 적층 구조의 바람직한 실시예를 도시하였으며, 이에 대해 좀 더 상세하게 설명하기로 한다.In addition, the battery module 100 provided with the elastic member of the present invention has a structure in which the unit battery cells 200, the elastic member 300, and the heat transfer member 400 are stacked, and the separation wall 110 of the housing 100 is formed. It is provided in a space partitioned by ), and FIG. 3 shows a preferred embodiment of a stacked structure, which will be described in more detail.

도 5는 도 3에 도시된 적층 구조의 분해사시도이이다.5 is an exploded perspective view of the stacked structure shown in FIG. 3.

도 5에 도시된 바와 같이, 본 발명의 실시예에 따른 신축부재가 구비된 배터리모듈(1000)은 하나의 열전달부재(400), 하나의 단위 배터리셀(200), 신축부재(300), 또 다른 하나의 단위 배터리셀(200), 또 다른 하나의 열전달부재(400)가 순차적으로 적층된 구조로 형성되는 것이 냉각효과를 극대화하기 위해 바람직하다.As shown in Figure 5, the battery module 1000 provided with an elastic member according to an embodiment of the present invention is one heat transfer member 400, one unit battery cell 200, the elastic member 300, and In order to maximize the cooling effect, it is preferable that the other unit battery cell 200 and the other heat transfer member 400 are sequentially stacked.

물론, 본 발명의 실시예에 따른 신축부재가 구비된 배터리모듈(1000)은 하나의 열전달부재(400), 하나의 단위 배터리셀(200), 신축부재(300), 또 다른 하나의 단위 배터리셀(200), 또 다른 하나의 열전달부재(400)가 순차적으로 적층된 구조로 형성되는 것이 바람직하나, 이에 한정하지 않고, 좀 더 다양한 적층 구조로도 적용이 가능하다.Of course, the battery module 1000 provided with an elastic member according to an embodiment of the present invention includes one heat transfer member 400, one unit battery cell 200, an elastic member 300, and another unit battery cell. (200), it is preferable that another heat transfer member 400 is formed in a sequentially stacked structure, but the present invention is not limited thereto, and may be applied to a more diverse stacked structure.

도 6은 도 3에 도시된 적층 구조의 단면도이며, 도 7은 도 3에 도시된 적층 구조가 하우징에 구비된 단면도이다.6 is a cross-sectional view of the laminated structure shown in FIG. 3, and FIG. 7 is a cross-sectional view of the laminated structure shown in FIG. 3 provided in a housing.

도 7에 도시된 바와 같이, 도 3에 도시된 적층 구조에서 신축부재(300)는 일반적인 상태의 길이(L1)를 갖는다.As shown in FIG. 7, in the stacked structure shown in FIG. 3, the elastic member 300 has a length L1 in a general state.

도 7에 도시된 바와 같이, 도 3에 도시된 적층 구조가 하우징(100)에 구비되면, 신축부재(300)는 압축되면서 일반적인 상태의 길이(L1)보다 짧아진 길이(L2)를 갖게 되며, 다시 반발력에 의해 신축부재(300)에 양측에 맞닿은 단위 배터리셀(200)을 분리벽(110) 측으로 밀착한다.As shown in FIG. 7, when the stacked structure shown in FIG. 3 is provided in the housing 100, the elastic member 300 has a length L2 shorter than the length L1 in a general state while being compressed, The unit battery cells 200 in contact with both sides of the elastic member 300 are brought into close contact with the separation wall 110 by the repulsive force.

밀착력을 받은 단위 배터리셀(200)은 열전달부재(400)를 분리벽(110) 측으로 밀착하게 된다.The unit battery cell 200 receiving the adhesion force closely contacts the heat transfer member 400 toward the separation wall 110.

이에 따라, 본 발명의 신축부재가 구비된 배터리 모듈(1000)은 신축부재(300)에 의해 단위 배터리셀(200), 분리벽(110), 열전달부재(400)이 서로 밀착됨으로서 밀착력이 증가함에 따라 열전달효율이 더욱 향상되는 장점이 있다.Accordingly, in the battery module 1000 provided with the elastic member of the present invention, the unit battery cell 200, the separation wall 110, and the heat transfer member 400 are in close contact with each other by the elastic member 300, thereby increasing adhesion. Accordingly, there is an advantage in that the heat transfer efficiency is further improved.

도 8은 신축부재의 실시예의 사시도이며, 도 9는 신축부재의 실시예의 사시도이다. Figure 8 is a perspective view of an embodiment of the elastic member, Figure 9 is a perspective view of the embodiment of the elastic member.

도 8 내지 도 9를 참조하면, 신축부재(300)는 적어도 하나 이상의 일측면의 일정영역이 서로 대응되도록 돌출된 돌출부(310)를 포함하되, 타측면의 테두리가 서로 대응되도록 절곡되며, 돌출부(310)가 서로 대향되도록 결합되는 한 쌍의 판형태로 형성될 수 있다.8 to 9, the elastic member 300 includes a protrusion 310 protruding so that a predetermined region of at least one side surface corresponds to each other, and the rims of the other side are bent to correspond to each other, and the protrusion ( 310) may be formed in the form of a pair of plates coupled to face each other.

이 때, 도 8 내지 도 9에 도시된 실시예로 형성된 신축부재(300)가 배터리셀 사이에 삽입되면, 신축부재(300)의 돌출부(310)가 압축력을 받아서, 다시 분리벽(110) 측으로 반발력을 주게 된다.At this time, when the elastic member 300 formed in the embodiment shown in FIGS. 8 to 9 is inserted between the battery cells, the protrusion 310 of the elastic member 300 receives a compressive force, and is again toward the separation wall 110. It gives repulsion.

도 10은 신축부재의 또다른 실시예의 사시도이며, 도 11은 신축부재의 또다른 실시예의 사시도이다.Figure 10 is a perspective view of another embodiment of the elastic member, Figure 11 is a perspective view of another embodiment of the elastic member.

도 10 내지 도 11을 참조하면, 신축부재(300)는 일측면의 일정영역이 서로 대응되도록 함몰되며 표면이 요철형태로 형성되는 함몰부(320)를 포함하여 한 쌍의 판형태로 형성될 수 있다.Referring to FIGS. 10 to 11, the elastic member 300 may be formed in a pair of plate shape including a recessed portion 320 that is recessed so that a predetermined area of one side thereof corresponds to each other, and the surface is formed in an uneven shape. have.

이 때, 도 10 내지 도 11에 도시된 실시예로 형성된 신축부재(300)가 배터리셀 사이에 삽입되면, 신축부재(300)의 함몰부(320)가 압축력을 받아서 다시 분리벽(110) 측으로 반발력을 주게 된다.At this time, when the expansion and contraction member 300 formed in the embodiment shown in FIGS. 10 to 11 is inserted between the battery cells, the depression 320 of the expansion and contraction member 300 receives a compressive force and moves back toward the separation wall 110. It gives repulsion.

또한, 도 8 내지 도 11에 도시된 실시예로 신축부재(300)가 형성될 경우, 신축부재(300)는 알루미늄 또는 열전도성 금속 재질로 형성되며, 신축부재(300)를 형성하는 한 쌍의 판은 외측 테두리가 절곡되어 형성될 수 있다.In addition, when the elastic member 300 is formed in the embodiment shown in FIGS. 8 to 11, the elastic member 300 is formed of aluminum or a thermally conductive metal material, and a pair of forming the elastic member 300 The plate may be formed by bending the outer edge.

첨부된 도면은 본 발명의 기술적 사상을 더욱 구체적으로 설명하기 위하여 도시한 일예에 불과하므로 본 발명의 기술적 사상이 첨부된 도면의 형태에 한정되는 것은 아니다.The accompanying drawings are only an example shown to describe the technical idea of the present invention in more detail, so the technical idea of the present invention is not limited to the form of the accompanying drawings.

본 발명은 상기한 실시예에 한정되지 아니하며, 적용범위가 다양함은 물론이고, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 다양한 변형 실시가 가능한 것은 물론이다.The present invention is not limited to the above-described embodiments, and of course, various modifications can be made without departing from the gist of the present invention as claimed in the claims.

1000 : 본 발명의 신축부재가 구비된 배터리모듈
100 : 하우징
110 : 분리벽
200 : 단위 배터리셀
210 : 케이스 220 : 배터리셀
230 : 양극 전극탭 240 : 음극 전극탭
300 : 신축부재
310 : 돌출부 320 : 함몰부
400 : 열전달부재1000: a battery module provided with an elastic member of the present invention
100: housing
110: separation wall
200: unit battery cell
210: case 220: battery cell
230: positive electrode tab 240: negative electrode tab
300: elastic member
310: protrusion 320: depression
400: heat transfer member

Claims (7)

파우치형 케이스, 상기 파우치형 케이스 내부에 구비되는 배터리셀, 및 상기 배터리셀에 연결되는 음극과 양극의 전극탭을 포함하여 구성되는 단위 파우치형 배터리셀;과
복수개의 상기 단위 파우치형 배터리셀을 수용하는 하우징;을 포함하는 배터리 모듈에 있어서,
상기 하우징은 내부를 소정 개수의 분리되는 공간으로 구획하는 분리벽을 포함하고,
상기 분리벽에 의해 형성된 하우징의 각 공간에는 적어도 하나의 단위 파우치형 배터리셀이 수용되되,
상기 각 공간에 수용된 단위 파우치형 배터리셀 사이에는 신축가능하게 형성된 신축부재가 배치되고,
상기 각 공간에 수용된 단위 파우치형 배터리셀의 일면과 분리벽, 또는 상기 각 공간에 수용된 단위 파우치형 배터리셀의 일면과 하우징의 외벽 사이에는 하우징의 외부로 열을 전달하기 위해 배치되는 열전달부재를 더 포함하되,
상기 열전달 부재는,
상기 단위 파우치형 배터리셀의 일부를 수용할 수 있도록 함몰 형성되고, 상기 단위 파우치형 배터리셀과 함께 상기 각 공간에 수용될 때 열전달 부재의 테두리가 상기 분리벽의 상부까지 연장되는, 배터리모듈.
A unit pouch-type battery cell comprising a pouch-type case, a battery cell provided inside the pouch-type case, and electrode tabs of a negative electrode and a positive electrode connected to the battery cell; and
In the battery module comprising a; a housing for accommodating a plurality of the unit pouch-type battery cells,
The housing includes a separation wall that divides the interior into a predetermined number of separated spaces,
At least one unit pouch-type battery cell is accommodated in each space of the housing formed by the separation wall,
Between the unit pouch-type battery cells accommodated in the respective spaces, an elastic member formed to be elastic is disposed,
A heat transfer member disposed to transfer heat to the outside of the housing is further provided between one surface of the unit pouch type battery cell accommodated in each space and a separation wall, or between one surface of the unit pouch type battery cell accommodated in each space and the outer wall of the housing. Include,
The heat transfer member,
The battery module, wherein the unit pouch-type battery cell is formed to be recessed to accommodate a portion of the unit pouch-type battery cell, and when the unit pouch-type battery cell is accommodated in each of the spaces, the edge of the heat transfer member extends to an upper portion of the separation wall.
 제1항에 있어서,
상기 신축부재는 평판으로 형성되고,
스티렌부타디엔고무(styrene butadien rubber:SBR), 폴리클로로프렌고무(polychloroprene rubber:CR), 니트릴고무(acrylonitrile-butadiene rubber:NBR), 부틸고무(isoprene-isobutylene rubber:IIR), 부타디엔고무(butadiene rubber:BR), 이소프렌고무(isoprene rubber:IR), 에틸렌프로필렌고무(ethylene propylene rubber:EPR), 다황화물계고 무(polysulfide rubber), 실리콘고무(silicone rubber), 플루오로고무(fluororubber), 우레탄고무(urethane rubber), 아크릴고무(acrylic rubber)중 선택되는 한가지 재질로 형성되는, 배터리모듈.
The method of claim 1,
The elastic member is formed in a flat plate,
Styrene butadien rubber (SBR), polychloroprene rubber (CR), acrylonitrile-butadiene rubber (NBR), isoprene-isobutylene rubber (IIR), butadiene rubber (BR) ), isoprene rubber (IR), ethylene propylene rubber (EPR), polysulfide rubber, silicone rubber, fluororubber, urethane rubber ), a battery module formed of one material selected from acrylic rubber.
 제1항에 있어서,
상기 신축부재는 알루미늄 또는 열전도성 금속재질로 형성되는 한 쌍의 판이 겹쳐 형성되되,
상기 한 쌍의 판은 적어도 하나 이상의 일정영역이 서로 대응되도록 돌출된 돌출부를 포함하고,
상기 돌출부가 서로 대향하도록 결합되어 형성되는, 배터리모듈.
The method of claim 1,
The elastic member is formed by overlapping a pair of plates formed of aluminum or a thermally conductive metal material,
The pair of plates includes protrusions protruding so that at least one or more predetermined regions correspond to each other,
The battery module is formed by combining the protrusions to face each other.
 제1항에 있어서,
상기 신축부재는 알루미늄 또는 열전도성 금속재질로 형성되는 한 쌍의 판이 겹쳐 형성되되,
일정영역이 서로 대응되도록 함몰되며 표면이 요철형태로 형성된 함몰부를 포함하는, 배터리모듈.
The method of claim 1,
The elastic member is formed by overlapping a pair of plates formed of aluminum or a thermally conductive metal material,
A battery module including a depression in which a predetermined region is depressed to correspond to each other and the surface is formed in an uneven shape.
 삭제delete 제3항 또는 제4항에 있어서,
상기 신축부재를 형성하는 한 쌍의 판은 외측 테두리가 절곡되어 형성되는 것을 특징으로 하는, 배터리모듈.
The method according to claim 3 or 4,
The battery module, characterized in that the pair of plates forming the elastic member is formed by bending an outer edge.
 삭제delete
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